Django rest framework, change ForeignKey - django

Question

i'm fighting with DRF too long so now i must ask question.. How change ForeignKey to another? I have user profile and relation to status model.
models.py
class Profile(models.Model):
user = models.OneToOneField(User, on_delete=models.CASCADE)
ldap_uid = models.CharField(max_length=100, blank=True, null=True, default=None)
redmine_id = models.IntegerField(blank=True, null=True, default=None)
status = models.ForeignKey(Status, models.SET_NULL, blank=False, null=True, default=DEFAULT_STATUS_ID)
location = models.ForeignKey(Location, models.SET_NULL, blank=False, null=True, default=DEFAULT_LOCATION_ID)
online = models.BooleanField(default=False)
class SelectValuesModel(models.Model):
name = models.CharField(max_length=100)
display_name = models.CharField(max_length=100)
def __str__(self):
return self.name
class Meta:
abstract = True
class Status(SelectValuesModel):
pass
class Location(SelectValuesModel):
pass
What is good way to change Profile status to another? I'm trying with something like this without success
views.py
class UserStatusView(viewsets.ViewSet):
def partial_update(self, request, pk=None):
user = User.objects.get(pk=pk)
user_profile = user.profile
new_stauts = Status.objects.get(request.data.status)
serialized_data = ProfileSerializer(user_profile)
if(serialized_data.is_valid()):
serialized_data.save(status=new_stauts)
return Response(serialized_data.errors)
And trying send new id via PATCH. I'm trying tto find solution but no success here too. And how do it good? Make another route for updating Profile status? Or make something like profile/1/update_status/2? Now my routing looks like:
router = routers.DefaultRouter()
router.register(r'users', views.UserViewSet)
router.register(r'redmine', views.RedmineCurrentTaskView, base_name='redmine')
router.register(r'parameters', views.ParametersView, base_name='parameters')
router.register(r'update_status', views.UserStatusView, base_name='update_status')
router.register(r'debug', views.DebugStatus, base_name='debug')
urlpatterns = [
path('', views.index, name='index'),
path('api/', include(router.urls))
]
And serializers.py
class SelectValuesSerializer(serializers.ModelSerializer):
class Meta:
fields = ('pk', 'name', 'display_name')
class LocationSerializer(SelectValuesSerializer):
class Meta(SelectValuesSerializer.Meta):
model = Location
class StatusSerializer(SelectValuesSerializer):
class Meta(SelectValuesSerializer.Meta):
model = Status
class ProfileSerializer(serializers.ModelSerializer):
status = StatusSerializer()
location = LocationSerializer()
class Meta:
model = Profile
fields = ('status', 'location', 'online', 'redmine_id')
class UserSerializer(serializers.ModelSerializer):
profile = ProfileSerializer(read_only=True)
class Meta:
model = User
fields = ('pk', 'first_name', 'profile')
read_only_fields = ('first_name',)

Answer 1

Just pass request.data to the serializer with partial=True argument:
class UserStatusView(viewsets.ViewSet):
def partial_update(self, request, pk=None):
user = User.objects.get(pk=pk)
user_profile = user.profile
serialized_data = ProfileSerializer(user_profile, data=request.data, partial=True)
if serialized_data.is_valid():
serialized_data.save()
return Response(serialized_data.data)
return Response(serialized_data.errors)
You need to provide status_id with request body like this:
{"status": 1}
UPD
To pass status as id change your serializer to this:
class ProfileSerializer(serializers.ModelSerializer):
location = LocationSerializer()
class Meta:
model = Profile
fields = ('status', 'location', 'online', 'redmine_id')
def to_representation(self, instance):
self.fields['status'] = StatusSerializer()
return super(ProfileSerializer, self).to_representation(instance)
This allows to post status_id, but get status details with your API.